/////////////////////////////////////////////////////////////////////////////
-// Name: printing.cpp
-// Purpose: Printing demo for wxWindows
+// Name: samples/printing.cpp
+// Purpose: Printing demo for wxWidgets
// Author: Julian Smart
// Modified by:
// Created: 1995
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation
-#endif
-
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#endif
#if !wxUSE_PRINTING_ARCHITECTURE
-#error You must set wxUSE_PRINTING_ARCHITECTURE to 1 in setup.h to compile this demo.
+#error "You must set wxUSE_PRINTING_ARCHITECTURE to 1 in setup.h, and recompile the library."
#endif
// Set this to 1 if you want to test PostScript printing under MSW.
#include "wx/metafile.h"
#include "wx/print.h"
#include "wx/printdlg.h"
-
+#include "wx/image.h"
#include "wx/accel.h"
#if wxTEST_POSTSCRIPT_IN_MSW
#include "wx/generic/prntdlgg.h"
#endif
+#ifdef __WXMAC__
+#include "wx/mac/printdlg.h"
+#endif
+
#include "printing.h"
#ifndef __WXMSW__
wxPrintData *g_printData = (wxPrintData*) NULL ;
// Global page setup data
-wxPageSetupData* g_pageSetupData = (wxPageSetupData*) NULL;
+wxPageSetupDialogData* g_pageSetupData = (wxPageSetupDialogData*) NULL;
// Main proc
IMPLEMENT_APP(MyApp)
// Writes a header on a page. Margin units are in millimetres.
-bool WritePageHeader(wxPrintout *printout, wxDC *dc, wxChar *text, float mmToLogical);
-
-MyApp::MyApp()
-{
-}
+bool WritePageHeader(wxPrintout *printout, wxDC *dc, const wxChar *text, float mmToLogical);
// The `main program' equivalent, creating the windows and returning the
// main frame
+
bool MyApp::OnInit(void)
{
- m_testFont = new wxFont(10, wxSWISS, wxNORMAL, wxNORMAL);
-
+ if ( !wxApp::OnInit() )
+ return false;
+
+ wxInitAllImageHandlers();
+
+ m_testFont.Create(10, wxSWISS, wxNORMAL, wxNORMAL);
+
g_printData = new wxPrintData;
+ // You could set an initial paper size here
+// g_printData->SetPaperId(wxPAPER_LETTER); // for Americans
+// g_printData->SetPaperId(wxPAPER_A4); // for everyone else
+
g_pageSetupData = new wxPageSetupDialogData;
-
+ // copy over initial paper size from print record
+ (*g_pageSetupData) = *g_printData;
+ // Set some initial page margins in mm.
+ g_pageSetupData->SetMarginTopLeft(wxPoint(15, 15));
+ g_pageSetupData->SetMarginBottomRight(wxPoint(15, 15));
+
// Create the main frame window
- frame = new MyFrame((wxFrame *) NULL, _T("wxWindows Printing Demo"), wxPoint(0, 0), wxSize(400, 400));
-
+ frame = new MyFrame((wxFrame *) NULL, _T("wxWidgets Printing Demo"),
+ wxPoint(0, 0), wxSize(400, 400));
+
+#if wxUSE_STATUSBAR
// Give it a status line
frame->CreateStatusBar(2);
-
+#endif // wxUSE_STATUSBAR
+
// Load icon and bitmap
frame->SetIcon( wxICON( mondrian) );
-
+
// Make a menubar
wxMenu *file_menu = new wxMenu;
-
+
file_menu->Append(WXPRINT_PRINT, _T("&Print..."), _T("Print"));
- file_menu->Append(WXPRINT_PRINT_SETUP, _T("Print &Setup..."), _T("Setup printer properties"));
file_menu->Append(WXPRINT_PAGE_SETUP, _T("Page Set&up..."), _T("Page setup"));
+#ifdef __WXMAC__
+ file_menu->Append(WXPRINT_PAGE_MARGINS, _T("Page Margins..."), _T("Page margins"));
+#endif
file_menu->Append(WXPRINT_PREVIEW, _T("Print Pre&view"), _T("Preview"));
-
+
#if wxUSE_ACCEL
// Accelerators
wxAcceleratorEntry entries[1];
#if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
file_menu->AppendSeparator();
file_menu->Append(WXPRINT_PRINT_PS, _T("Print PostScript..."), _T("Print (PostScript)"));
- file_menu->Append(WXPRINT_PRINT_SETUP_PS, _T("Print Setup PostScript..."), _T("Setup printer properties (PostScript)"));
file_menu->Append(WXPRINT_PAGE_SETUP_PS, _T("Page Setup PostScript..."), _T("Page setup (PostScript)"));
file_menu->Append(WXPRINT_PREVIEW_PS, _T("Print Preview PostScript"), _T("Preview (PostScript)"));
#endif
+
+ file_menu->AppendSeparator();
+ file_menu->Append(WXPRINT_ANGLEUP, _T("Angle up\tAlt-U"), _T("Raise rotated text angle"));
+ file_menu->Append(WXPRINT_ANGLEDOWN, _T("Angle down\tAlt-D"), _T("Lower rotated text angle"));
file_menu->AppendSeparator();
file_menu->Append(WXPRINT_QUIT, _T("E&xit"), _T("Exit program"));
-
+
wxMenu *help_menu = new wxMenu;
help_menu->Append(WXPRINT_ABOUT, _T("&About"), _T("About this demo"));
-
+
wxMenuBar *menu_bar = new wxMenuBar;
-
+
menu_bar->Append(file_menu, _T("&File"));
menu_bar->Append(help_menu, _T("&Help"));
-
+
// Associate the menu bar with the frame
frame->SetMenuBar(menu_bar);
-
+
MyCanvas *canvas = new MyCanvas(frame, wxPoint(0, 0), wxSize(100, 100), wxRETAINED|wxHSCROLL|wxVSCROLL);
-
+
// Give it scrollbars: the virtual canvas is 20 * 50 = 1000 pixels in each direction
canvas->SetScrollbars(20, 20, 50, 50);
-
+
frame->canvas = canvas;
-
+
frame->Centre(wxBOTH);
- frame->Show(TRUE);
-
+ frame->Show();
+
+#if wxUSE_STATUSBAR
frame->SetStatusText(_T("Printing demo"));
-
+#endif // wxUSE_STATUSBAR
+
SetTopWindow(frame);
-
- return TRUE;
+
+ return true;
}
int MyApp::OnExit()
{
- delete wxGetApp().m_testFont;
delete g_printData;
delete g_pageSetupData;
return 1;
EVT_MENU(WXPRINT_QUIT, MyFrame::OnExit)
EVT_MENU(WXPRINT_PRINT, MyFrame::OnPrint)
EVT_MENU(WXPRINT_PREVIEW, MyFrame::OnPrintPreview)
-EVT_MENU(WXPRINT_PRINT_SETUP, MyFrame::OnPrintSetup)
EVT_MENU(WXPRINT_PAGE_SETUP, MyFrame::OnPageSetup)
EVT_MENU(WXPRINT_ABOUT, MyFrame::OnPrintAbout)
#if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
EVT_MENU(WXPRINT_PRINT_PS, MyFrame::OnPrintPS)
EVT_MENU(WXPRINT_PREVIEW_PS, MyFrame::OnPrintPreviewPS)
-EVT_MENU(WXPRINT_PRINT_SETUP_PS, MyFrame::OnPrintSetupPS)
EVT_MENU(WXPRINT_PAGE_SETUP_PS, MyFrame::OnPageSetupPS)
#endif
+#ifdef __WXMAC__
+EVT_MENU(WXPRINT_PAGE_MARGINS, MyFrame::OnPageMargins)
+#endif
+EVT_MENU(WXPRINT_ANGLEUP, MyFrame::OnAngleUp)
+EVT_MENU(WXPRINT_ANGLEDOWN, MyFrame::OnAngleDown)
END_EVENT_TABLE()
// Define my frame constructor
MyFrame::MyFrame(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size):
-wxFrame(frame, -1, title, pos, size)
+wxFrame(frame, wxID_ANY, title, pos, size)
{
- canvas = (MyCanvas *) NULL;
+ canvas = NULL;
+ m_angle = 30;
+#if 0
+ wxImage image( wxT("test.jpg") );
+ image.SetAlpha();
+ int i,j;
+ for (i = 0; i < image.GetWidth(); i++)
+ for (j = 0; j < image.GetHeight(); j++)
+ image.SetAlpha( i, j, 50 );
+ m_bitmap = image;
+#endif
}
void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event))
{
- Close(TRUE);
+ Close(true /*force closing*/);
}
void MyFrame::OnPrint(wxCommandEvent& WXUNUSED(event))
wxPrinter printer(& printDialogData);
MyPrintout printout(_T("My printout"));
- if (!printer.Print(this, &printout, TRUE))
+ if (!printer.Print(this, &printout, true /*prompt*/))
{
if (wxPrinter::GetLastError() == wxPRINTER_ERROR)
wxMessageBox(_T("There was a problem printing.\nPerhaps your current printer is not set correctly?"), _T("Printing"), wxOK);
wxMessageBox(_T("There was a problem previewing.\nPerhaps your current printer is not set correctly?"), _T("Previewing"), wxOK);
return;
}
-
+
wxPreviewFrame *frame = new wxPreviewFrame(preview, this, _T("Demo Print Preview"), wxPoint(100, 100), wxSize(600, 650));
frame->Centre(wxBOTH);
frame->Initialize();
- frame->Show(TRUE);
-}
-
-void MyFrame::OnPrintSetup(wxCommandEvent& WXUNUSED(event))
-{
- wxPrintDialogData printDialogData(* g_printData);
- wxPrintDialog printerDialog(this, & printDialogData);
-
- printerDialog.GetPrintDialogData().SetSetupDialog(TRUE);
- printerDialog.ShowModal();
-
- (*g_printData) = printerDialog.GetPrintDialogData().GetPrintData();
+ frame->Show();
}
void MyFrame::OnPageSetup(wxCommandEvent& WXUNUSED(event))
{
- (*g_pageSetupData) = * g_printData;
+ (*g_pageSetupData) = *g_printData;
wxPageSetupDialog pageSetupDialog(this, g_pageSetupData);
pageSetupDialog.ShowModal();
-
- (*g_printData) = pageSetupDialog.GetPageSetupData().GetPrintData();
- (*g_pageSetupData) = pageSetupDialog.GetPageSetupData();
+
+ (*g_printData) = pageSetupDialog.GetPageSetupDialogData().GetPrintData();
+ (*g_pageSetupData) = pageSetupDialog.GetPageSetupDialogData();
}
#if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
{
wxPostScriptPrinter printer(g_printData);
MyPrintout printout(_T("My printout"));
- printer.Print(this, &printout, TRUE);
+ printer.Print(this, &printout, true/*prompt*/);
(*g_printData) = printer.GetPrintData();
}
wxPreviewFrame *frame = new wxPreviewFrame(preview, this, _T("Demo Print Preview"), wxPoint(100, 100), wxSize(600, 650));
frame->Centre(wxBOTH);
frame->Initialize();
- frame->Show(TRUE);
+ frame->Show();
}
-void MyFrame::OnPrintSetupPS(wxCommandEvent& WXUNUSED(event))
+void MyFrame::OnPageSetupPS(wxCommandEvent& WXUNUSED(event))
{
- wxPrintDialogData printDialogData(* g_printData);
- wxGenericPrintDialog printerDialog(this, & printDialogData);
+ (*g_pageSetupData) = * g_printData;
- printerDialog.GetPrintDialogData().SetSetupDialog(TRUE);
- printerDialog.ShowModal();
+ wxGenericPageSetupDialog pageSetupDialog(this, g_pageSetupData);
+ pageSetupDialog.ShowModal();
- (*g_printData) = printerDialog.GetPrintDialogData().GetPrintData();
+ (*g_printData) = pageSetupDialog.GetPageSetupDialogData().GetPrintData();
+ (*g_pageSetupData) = pageSetupDialog.GetPageSetupDialogData();
}
+#endif
-void MyFrame::OnPageSetupPS(wxCommandEvent& WXUNUSED(event))
+
+#ifdef __WXMAC__
+void MyFrame::OnPageMargins(wxCommandEvent& WXUNUSED(event))
{
- (*g_pageSetupData) = * g_printData;
+ (*g_pageSetupData) = *g_printData;
- wxGenericPageSetupDialog pageSetupDialog(this, g_pageSetupData);
- pageSetupDialog.ShowModal();
+ wxMacPageMarginsDialog pageMarginsDialog(this, g_pageSetupData);
+ pageMarginsDialog.ShowModal();
- (*g_printData) = pageSetupDialog.GetPageSetupData().GetPrintData();
- (*g_pageSetupData) = pageSetupDialog.GetPageSetupData();
+ (*g_printData) = pageMarginsDialog.GetPageSetupDialogData().GetPrintData();
+ (*g_pageSetupData) = pageMarginsDialog.GetPageSetupDialogData();
}
#endif
void MyFrame::OnPrintAbout(wxCommandEvent& WXUNUSED(event))
{
- (void)wxMessageBox(_T("wxWindows printing demo\nAuthor: Julian Smart"),
- _T("About wxWindows printing demo"), wxOK|wxCENTRE);
+ (void)wxMessageBox(_T("wxWidgets printing demo\nAuthor: Julian Smart"),
+ _T("About wxWidgets printing demo"), wxOK|wxCENTRE);
+}
+
+void MyFrame::OnAngleUp(wxCommandEvent& WXUNUSED(event))
+{
+ m_angle += 5;
+ canvas->Refresh();
+}
+
+void MyFrame::OnAngleDown(wxCommandEvent& WXUNUSED(event))
+{
+ m_angle -= 5;
+ canvas->Refresh();
}
void MyFrame::Draw(wxDC& dc)
{
+ // This routine just draws a bunch of random stuff on the screen so that we
+ // can check that different types of object are being drawn consistently
+ // between the screen image, the print preview image (at various zoom
+ // levels), and the printed page.
dc.SetBackground(*wxWHITE_BRUSH);
- dc.Clear();
- dc.SetFont(* wxGetApp().m_testFont);
-
- dc.SetBackgroundMode(wxTRANSPARENT);
-
- dc.SetBrush(* wxCYAN_BRUSH);
- dc.SetPen(* wxRED_PEN);
-
- dc.DrawRectangle(0, 30, 200, 100);
-
- dc.DrawText( wxT("Rectangle 200 by 100"), 40, 40);
+ // dc.Clear();
+ dc.SetFont(wxGetApp().m_testFont);
+
+ // dc.SetBackgroundMode(wxTRANSPARENT);
+
+ dc.SetPen(*wxBLACK_PEN);
+ dc.SetBrush(*wxLIGHT_GREY_BRUSH);
+ dc.DrawRectangle(0, 0, 230, 350);
+ dc.DrawLine(0, 0, 229, 349);
+ dc.DrawLine(229, 0, 0, 349);
+ dc.SetBrush(*wxTRANSPARENT_BRUSH);
+
+ dc.SetBrush(*wxCYAN_BRUSH);
+ dc.SetPen(*wxRED_PEN);
+
+ dc.DrawRoundedRectangle(0, 20, 200, 80, 20);
+ dc.DrawText( wxT("Rectangle 200 by 80"), 40, 40);
+
+ dc.SetPen( wxPen(*wxBLACK,0,wxDOT_DASH) );
dc.DrawEllipse(50, 140, 100, 50);
-
+ dc.SetPen(*wxRED_PEN);
+
dc.DrawText( wxT("Test message: this is in 10 point text"), 10, 180);
#if wxUSE_UNICODE
- char *test = "Greek (Ελληνικά) Γειά σας -- Hebrew שלום -- Japanese (日本語)";
+ char *test = "Hebrew שלום -- Japanese (日本語)";
wxString tmp = wxConvUTF8.cMB2WC( test );
- dc.DrawText( tmp, 10, 200 );
+ dc.DrawText( tmp, 10, 200 );
#endif
-
- dc.SetPen(* wxBLACK_PEN);
- dc.DrawLine(0, 0, 200, 200);
- dc.DrawLine(200, 0, 0, 200);
-
+
+ wxPoint points[5];
+ points[0].x = 0;
+ points[0].y = 0;
+ points[1].x = 20;
+ points[1].y = 0;
+ points[2].x = 20;
+ points[2].y = 20;
+ points[3].x = 10;
+ points[3].y = 20;
+ points[4].x = 10;
+ points[4].y = -20;
+ dc.DrawPolygon( 5, points, 20, 250, wxODDEVEN_RULE );
+ dc.DrawPolygon( 5, points, 50, 250, wxWINDING_RULE );
+
+ dc.DrawEllipticArc( 80, 250, 60, 30, 0.0, 270.0 );
+
+ points[0].x = 150;
+ points[0].y = 250;
+ points[1].x = 180;
+ points[1].y = 250;
+ points[2].x = 180;
+ points[2].y = 220;
+ points[3].x = 200;
+ points[3].y = 220;
+ dc.DrawSpline( 4, points );
+
+ dc.DrawArc( 20,10, 10,10, 25,40 );
+
+ wxString str;
+ int i = 0;
+ str.Printf( wxT("---- Text at angle %d ----"), i );
+ dc.DrawRotatedText( str, 100, 300, i );
+
+ i = m_angle;
+ str.Printf( wxT("---- Text at angle %d ----"), i );
+ dc.DrawRotatedText( str, 100, 300, i );
+
wxIcon my_icon = wxICON(mondrian) ;
-
+
dc.DrawIcon( my_icon, 100, 100);
+
+ if (m_bitmap.Ok())
+ dc.DrawBitmap( m_bitmap, 10, 10 );
}
void MyFrame::OnSize(wxSizeEvent& event )
EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
END_EVENT_TABLE()
-// Define a constructor for my canvas
MyCanvas::MyCanvas(wxFrame *frame, const wxPoint& pos, const wxSize& size, long style):
- wxScrolledWindow(frame, -1, pos, size, style)
+ wxScrolledWindow(frame, wxID_ANY, pos, size, style)
{
SetBackgroundColour(* wxWHITE);
}
-MyCanvas::~MyCanvas(void)
-{
-}
-
-// Define the repainting behaviour
void MyCanvas::OnDraw(wxDC& dc)
{
frame->Draw(dc);
if (dc)
{
if (page == 1)
- DrawPageOne(dc);
+ DrawPageOne();
else if (page == 2)
- DrawPageTwo(dc);
-
- dc->SetDeviceOrigin(0, 0);
- dc->SetUserScale(1.0, 1.0);
-
+ DrawPageTwo();
+
+ // Draw page numbers at top left corner of printable area, sized so that
+ // screen size of text matches paper size.
+ MapScreenSizeToPage();
wxChar buf[200];
wxSprintf(buf, wxT("PAGE %d"), page);
- // dc->DrawText(buf, 10, 10);
-
- return TRUE;
+ dc->DrawText(buf, 0, 0);
+
+ return true;
}
else
- return FALSE;
+ return false;
}
bool MyPrintout::OnBeginDocument(int startPage, int endPage)
{
if (!wxPrintout::OnBeginDocument(startPage, endPage))
- return FALSE;
-
- return TRUE;
+ return false;
+
+ return true;
}
void MyPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
return (pageNum == 1 || pageNum == 2);
}
-void MyPrintout::DrawPageOne(wxDC *dc)
+void MyPrintout::DrawPageOne()
{
-/* You might use THIS code if you were scaling
-* graphics of known size to fit on the page.
- */
- int w, h;
-
- // We know the graphic is 200x200. If we didn't know this,
- // we'd need to calculate it.
- float maxX = 200;
- float maxY = 200;
-
- // Let's have at least 50 device units margin
- float marginX = 50;
- float marginY = 50;
-
- // Add the margin to the graphic size
- maxX += (2*marginX);
- maxY += (2*marginY);
-
- // Get the size of the DC in pixels
- dc->GetSize(&w, &h);
-
- // Calculate a suitable scaling factor
- float scaleX=(float)(w/maxX);
- float scaleY=(float)(h/maxY);
-
- // Use x or y scaling factor, whichever fits on the DC
- float actualScale = wxMin(scaleX,scaleY);
-
- // Calculate the position on the DC for centring the graphic
- float posX = (float)((w - (200*actualScale))/2.0);
- float posY = (float)((h - (200*actualScale))/2.0);
-
- // Set the scale and origin
- dc->SetUserScale(actualScale, actualScale);
- dc->SetDeviceOrigin( (long)posX, (long)posY );
- //dc->SetUserScale(1.0, 1.0);
-
- frame->Draw(*dc);
+ // You might use THIS code if you were scaling graphics of known size to fit
+ // on the page. The commented-out code illustrates different ways of scaling
+ // the graphics.
+
+ // We know the graphic is 230x350. If we didn't know this, we'd need to
+ // calculate it.
+ wxCoord maxX = 230;
+ wxCoord maxY = 350;
+
+ // This sets the user scale and origin of the DC so that the image fits
+ // within the paper rectangle (but the edges could be cut off by printers
+ // that can't print to the edges of the paper -- which is most of them. Use
+ // this if your image already has its own margins.
+// FitThisSizeToPaper(wxSize(maxX, maxY));
+// wxRect fitRect = GetLogicalPaperRect();
+
+ // This sets the user scale and origin of the DC so that the image fits
+ // within the page rectangle, which is the printable area on Mac and MSW
+ // and is the entire page on other platforms.
+// FitThisSizeToPage(wxSize(maxX, maxY));
+// wxRect fitRect = GetLogicalPageRect();
+
+ // This sets the user scale and origin of the DC so that the image fits
+ // within the page margins as specified by g_PageSetupData, which you can
+ // change (on some platforms, at least) in the Page Setup dialog. Note that
+ // on Mac, the native Page Setup dialog doesn't let you change the margins
+ // of a wxPageSetupDialogData object, so you'll have to write your own dialog or
+ // use the Mac-only wxMacPageMarginsDialog, as we do in this program.
+ FitThisSizeToPageMargins(wxSize(maxX, maxY), *g_pageSetupData);
+ wxRect fitRect = GetLogicalPageMarginsRect(*g_pageSetupData);
+
+ // This sets the user scale and origin of the DC so that the image appears
+ // on the paper at the same size that it appears on screen (i.e., 10-point
+ // type on screen is 10-point on the printed page) and is positioned in the
+ // top left corner of the page rectangle (just as the screen image appears
+ // in the top left corner of the window).
+// MapScreenSizeToPage();
+// wxRect fitRect = GetLogicalPageRect();
+
+ // You could also map the screen image to the entire paper at the same size
+ // as it appears on screen.
+// MapScreenSizeToPaper();
+// wxRect fitRect = GetLogicalPaperRect();
+
+ // You might also wish to do you own scaling in order to draw objects at
+ // full native device resolution. In this case, you should do the following.
+ // Note that you can use the GetLogicalXXXRect() commands to obtain the
+ // appropriate rect to scale to.
+// MapScreenSizeToDevice();
+// wxRect fitRect = GetLogicalPageRect();
+
+ // Each of the preceding Fit or Map routines positions the origin so that
+ // the drawn image is positioned at the top left corner of the reference
+ // rectangle. You can easily center or right- or bottom-justify the image as
+ // follows.
+
+ // This offsets the image so that it is centered within the reference
+ // rectangle defined above.
+ wxCoord xoff = (fitRect.width - maxX) / 2;
+ wxCoord yoff = (fitRect.height - maxY) / 2;
+ OffsetLogicalOrigin(xoff, yoff);
+
+ // This offsets the image so that it is positioned at the bottom right of
+ // the reference rectangle defined above.
+// wxCoord xoff = (fitRect.width - maxX);
+// wxCoord yoff = (fitRect.height - maxY);
+// OffsetLogicalOrigin(xoff, yoff);
+
+ frame->Draw(*GetDC());
}
-void MyPrintout::DrawPageTwo(wxDC *dc)
+void MyPrintout::DrawPageTwo()
{
-/* You might use THIS code to set the printer DC to ROUGHLY reflect
-* the screen text size. This page also draws lines of actual length 5cm
-* on the page.
- */
+ // You might use THIS code to set the printer DC to ROUGHLY reflect
+ // the screen text size. This page also draws lines of actual length
+ // 5cm on the page.
+
+ // Compare this to DrawPageOne(), which uses the really convenient routines
+ // from wxPrintout to fit the screen image onto the printed page. This page
+ // illustrates how to do all the scaling calculations yourself, if you're so
+ // inclined.
+
+ wxDC *dc = GetDC();
+
// Get the logical pixels per inch of screen and printer
int ppiScreenX, ppiScreenY;
GetPPIScreen(&ppiScreenX, &ppiScreenY);
int ppiPrinterX, ppiPrinterY;
GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
-
- // This scales the DC so that the printout roughly represents the
- // the screen scaling. The text point size _should_ be the right size
- // but in fact is too small for some reason. This is a detail that will
- // need to be addressed at some point but can be fudged for the
- // moment.
+
+ // This scales the DC so that the printout roughly represents the the screen
+ // scaling. The text point size _should_ be the right size but in fact is
+ // too small for some reason. This is a detail that will need to be
+ // addressed at some point but can be fudged for the moment.
float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
-
- // Now we have to check in case our real page size is reduced
- // (e.g. because we're drawing to a print preview memory DC)
+
+ // Now we have to check in case our real page size is reduced (e.g. because
+ // we're drawing to a print preview memory DC)
int pageWidth, pageHeight;
int w, h;
dc->GetSize(&w, &h);
GetPageSizePixels(&pageWidth, &pageHeight);
-
- // If printer pageWidth == current DC width, then this doesn't
- // change. But w might be the preview bitmap width, so scale down.
+
+ // If printer pageWidth == current DC width, then this doesn't change. But w
+ // might be the preview bitmap width, so scale down.
float overallScale = scale * (float)(w/(float)pageWidth);
dc->SetUserScale(overallScale, overallScale);
-
- // Calculate conversion factor for converting millimetres into
- // logical units.
- // There are approx. 25.1 mm to the inch. There are ppi
- // device units to the inch. Therefore 1 mm corresponds to
- // ppi/25.1 device units. We also divide by the
- // screen-to-printer scaling factor, because we need to
+
+ // Calculate conversion factor for converting millimetres into logical
+ // units. There are approx. 25.4 mm to the inch. There are ppi device units
+ // to the inch. Therefore 1 mm corresponds to ppi/25.4 device units. We also
+ // divide by the screen-to-printer scaling factor, because we need to
// unscale to pass logical units to DrawLine.
-
+
// Draw 50 mm by 50 mm L shape
- float logUnitsFactor = (float)(ppiPrinterX/(scale*25.1));
+ float logUnitsFactor = (float)(ppiPrinterX/(scale*25.4));
float logUnits = (float)(50*logUnitsFactor);
dc->SetPen(* wxBLACK_PEN);
dc->DrawLine(50, 250, (long)(50.0 + logUnits), 250);
dc->DrawLine(50, 250, 50, (long)(250.0 + logUnits));
-
- dc->SetFont(* wxGetApp().m_testFont);
+
dc->SetBackgroundMode(wxTRANSPARENT);
-
-
+ dc->SetBrush(*wxTRANSPARENT_BRUSH);
+
{ // GetTextExtent demo:
wxString words[7] = {_T("This "), _T("is "), _T("GetTextExtent "), _T("testing "), _T("string. "), _T("Enjoy "), _T("it!")};
- long w, h;
+ wxCoord w, h;
long x = 200, y= 250;
wxFont fnt(15, wxSWISS, wxNORMAL, wxNORMAL);
-
+
dc->SetFont(fnt);
- for (int i = 0; i < 7; i++) {
- dc->GetTextExtent(words[i], &w, &h);
+
+ for (int i = 0; i < 7; i++)
+ {
+ wxString word = words[i];
+ word.Remove( word.Len()-1, 1 );
+ dc->GetTextExtent(word, &w, &h);
dc->DrawRectangle(x, y, w, h);
+ dc->GetTextExtent(words[i], &w, &h);
dc->DrawText(words[i], x, y);
x += w;
}
- dc->SetFont(* wxGetApp().m_testFont);
+
}
-
+
+ dc->SetFont(wxGetApp().m_testFont);
+
dc->DrawText(_T("Some test text"), 200, 300 );
// TESTING
-
+
int leftMargin = 20;
int rightMargin = 20;
int topMargin = 20;
int bottomMargin = 20;
-
+
int pageWidthMM, pageHeightMM;
GetPageSizeMM(&pageWidthMM, &pageHeightMM);
-
+
float leftMarginLogical = (float)(logUnitsFactor*leftMargin);
float topMarginLogical = (float)(logUnitsFactor*topMargin);
float bottomMarginLogical = (float)(logUnitsFactor*(pageHeightMM - bottomMargin));
float rightMarginLogical = (float)(logUnitsFactor*(pageWidthMM - rightMargin));
-
+
dc->SetPen(* wxRED_PEN);
- dc->DrawLine( (long)leftMarginLogical, (long)topMarginLogical,
+ dc->DrawLine( (long)leftMarginLogical, (long)topMarginLogical,
(long)rightMarginLogical, (long)topMarginLogical);
- dc->DrawLine( (long)leftMarginLogical, (long)bottomMarginLogical,
+ dc->DrawLine( (long)leftMarginLogical, (long)bottomMarginLogical,
(long)rightMarginLogical, (long)bottomMarginLogical);
-
+
WritePageHeader(this, dc, _T("A header"), logUnitsFactor);
}
// Writes a header on a page. Margin units are in millimetres.
-bool WritePageHeader(wxPrintout *printout, wxDC *dc, wxChar *text, float mmToLogical)
+bool WritePageHeader(wxPrintout *printout, wxDC *dc, const wxChar *text, float mmToLogical)
{
/*
static wxFont *headerFont = (wxFont *) NULL;
}
dc->SetFont(headerFont);
*/
-
+
int pageWidthMM, pageHeightMM;
-
+
printout->GetPageSizeMM(&pageWidthMM, &pageHeightMM);
-
+ wxUnusedVar(pageHeightMM);
+
int leftMargin = 10;
int topMargin = 10;
int rightMargin = 10;
-
+
float leftMarginLogical = (float)(mmToLogical*leftMargin);
float topMarginLogical = (float)(mmToLogical*topMargin);
float rightMarginLogical = (float)(mmToLogical*(pageWidthMM - rightMargin));
-
- long xExtent, yExtent;
+
+ wxCoord xExtent, yExtent;
dc->GetTextExtent(text, &xExtent, &yExtent);
float xPos = (float)(((((pageWidthMM - leftMargin - rightMargin)/2.0)+leftMargin)*mmToLogical) - (xExtent/2.0));
dc->DrawText(text, (long)xPos, (long)topMarginLogical);
-
+
dc->SetPen(* wxBLACK_PEN);
- dc->DrawLine( (long)leftMarginLogical, (long)(topMarginLogical+yExtent),
+ dc->DrawLine( (long)leftMarginLogical, (long)(topMarginLogical+yExtent),
(long)rightMarginLogical, (long)topMarginLogical+yExtent );
-
- return TRUE;
+
+ return true;
}
projects / wxWidgets.git / blobdiff